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Finding the Fourth Proportional to 117,280.83, 161,847.81 and 63,565.84

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Solution

The fourth proportional to 117,280.83, 161,847.81 and 63,565.84 is: 87,721.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,280.83 : 161,847.81 = 63,565.84 : x
  2. Step 2: Convert to fraction form
    117,280.83/161,847.81 = 63,565.84/x
  3. Step 3: Cross multiply
    117,280.83x = 161,847.81 × 63,565.84
  4. Step 4: Simplify right side
    117,280.83x = 10,287,991,994.81
  5. Step 5: Solve for x
    x = 10,287,991,994.81/117,280.83
  6. Step 6: Final answer
    x = 87,721.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.